Zvi Mowshowitz is a writer, AI safety analyst, and former professional Magic: The Gathering player. He is best known for his Substack newsletter 'Don't Worry About the Vase,' which publishes detailed weekly AI updates and rationalist commentary to over 33,000 subscribers. Inducted into the Magic: The Gathering Pro Tour Hall of Fame in 2007, Zvi is also the founder of nonprofit policy think tank Balsa Research and co-founded MetaMed, a personalized medical research firm backed by Peter Thiel. He is a prominent voice in the rationalist and AI safety communities, known for his p(doom) estimates of 60-70% and his systematic, data-driven approach to understanding AI risk.
Matthew Zeitlin is an economics and energy journalist currently reporting for Heatmap News, where he covers the intersection of policy, finance, and the energy transition. With bylines at BuzzFeed News, Grid, Slate, The Nation, n+1, Bloomberg Opinion, and The Atlantic, Zeitlin has built a career dissecting how money, power, and policy shape the energy grid. He writes a personal economics newsletter on Substack and is one of the sharper voices covering how the U.S. economy navigates decarbonization.
Dean Ball is a leading AI policy scholar, writer, and former White House advisor who shaped America's AI strategy from the inside. As Senior Fellow at the Foundation for American Innovation, co-host of the AI Summer podcast, and author of the widely-read Hyperdimensional newsletter, he makes the case for market-driven, light-touch governance of frontier AI - arguing that private governance mechanisms, not government mandates, are the right framework for the most transformative technology of our time.
Dylan Matthews is a policy journalist, effective altruism advocate, and former senior correspondent at Vox, where he founded and led the Future Perfect newsletter and section for seven years. Known for his deep-dive reporting on global health, animal welfare, and evidence-based philanthropy, Matthews embodies his own editorial philosophy: he donated a kidney to a stranger in 2016, initiating a chain that helped four people. As of December 2025, he joined Coefficient Giving (backed by Open Philanthropy) to manage the $120M+ Abundance and Growth Fund, moving from writing about doing good to actually doing it.
Kelsey Piper is an American journalist and effective altruism advocate best known for her work at Vox's Future Perfect newsletter, where she spent seven years covering AI safety, global catastrophic risks, evidence-based philanthropy, and education policy. She broke major stories including OpenAI's non-disparagement agreements and conducted the first post-collapse interview with Sam Bankman-Fried. In August 2025, she left Vox to co-found The Argument, a Substack newsletter focused on reasoned policy debate. A Stanford Symbolic Systems graduate who pledged 30% of her lifetime income to charity, Piper brings a rare combination of technical fluency, ethical rigor, and accessibility to some of the most consequential questions of our time.
Matthew Yglesias is one of America's most influential political writers - a Harvard-trained philosopher turned media entrepreneur who co-founded Vox and then bet on himself by launching Slow Boring, a Substack newsletter that earns him over $1.4 million a year. Known for his contrarian, rigorously argued takes on housing, immigration, economics, and American governance, he occupies a strange and productive niche: too wonky for Twitter, too heterodox for legacy media, and too prolific for anyone to ignore.
Paul Krugman is a Nobel Prize-winning economist, prolific author, and one of the most widely-read economic commentators in the world. After 24 years as an op-ed columnist for The New York Times, he left in December 2024 to launch a daily Substack newsletter that quickly surpassed 569,000 subscribers. A Distinguished Professor at CUNY Graduate Center, Krugman won the 2008 Nobel Memorial Prize in Economic Sciences for his work on New Trade Theory and New Economic Geography. With 4.3 million Twitter followers, 27 books, and a career spanning academia, policy advising, and public journalism, he remains a defining voice at the intersection of economics and politics.
Raylene Yung is an engineering leader, organizational designer, and public servant who scaled teams at Facebook and Stripe before co-founding U.S. Digital Response - the nonprofit that mobilized 10,000+ volunteers to help governments navigate COVID-19. She later served as Executive Director of the GSA's Technology Modernization Fund, overseeing $1B+ in federal tech investments, and as Chief of Staff at the Department of Energy's Office of Clean Energy Demonstrations. Now a board member at USDR and SolarAPP+, she writes 'raylene's field notes,' a Substack newsletter on climate, tech, and complex systems.